Die for bonding a padding to a covering member in a vehicle seat

Abstract

A die for pressingly bonding a foam padding to a covering member of assemblage of a vehicle seat, the foam padding being of a one-side-opened type having a hollow therein, which die includes an upper die comprising a main die portion and a movable die member connected hingedly thereto. The movability of such die member allows easy securement of the foam padding to the upper die, as the movable die member is easily inserted into the hollow of the padding, thereby allowing further insertion of the upper die on the whole into within the padding. When pressing the padding against the covering member by use of the upper die, the movable die member is moved within the padding to a position on the same horizontal line with the main die portion, giving a pressure evenly both padding and covering member for effective bonding of them.

What is claimed is: 
     
       1. A die for pressingly bonding a foam padding to a covering member to assemble a vehicle seat, the foam padding having an opening on one side comprising an inner wall and a hollow area formed therein, said die comprising: a first die means to which said foam padding is secured; and   a second die means on which said covering member is placed;   said first die means including: (a) a main die portion for pressing a part of the inner wall of said foam padding excepting said hollow area, against said coveting member placed on said second die means; and   (b) a movable die member connected hingedly to said main die portion such as to be movable towards a direction wherein said main die portion is pressed against said part of the inner wall of said foam padding;   wherein when said foam padding is secured to said first die means, said movable die member is inserted into said hollow area, so that it is completely enclosed by the hollow area and is adjacent to the entire surface area of the foam within the hollow area, and when said first die means is operated towards said second die means to press said foam padding against said coveting member, said movable die member is moved within said foam padding towards a position on same horizontal line with said main die portion.     
     
     
       2. The die as defined in claim 1, wherein said foam padding is formed with a through-opening which communicates with said hollow area and part of said inner wall of the foam padding, and wherein said movable die member of said first die means is provided with a projection means projecting outwardly from the first die means, said projection means being adapted to be inserted in said through-opening of said foam padding. 
     
     
       3. The die as defined in claim 2, wherein said first die means is of small dimensions relative to a volume of both said hollow area and part of said inner wall of said foam padding. 
     
     
       4. The die as defined in claim 1, wherein said first die means is of a shape substantially equal to the entire shape of both said part of the inner wall and said hollow area of said foam padding. 
     
     
       5. The die as defined in claim 1, wherein said main die portion is formed in a shape generally equal to a shape defined in said part of said foam padding inner wall, and wherein said movable die member is of dimensions substantially equal to a volume of said foam padding hollow area. 
     
     
       6. The die as defined in claim 1, wherein a stopper means is provided for limiting a range within which said movable die member is moved towards said direction wherein said main die portion is pressed against said part of said foam padding inner wall. 
     
     
       7. The die as defined in claim 1, wherein said first die means is an upper die and said second die means is a lower die, and wherein said upper die is operable to be moved towards and away from said lower die. 
     
     
       8. The die as defined in claim 1, wherein said movable die member is hingedly connected to one end of said main die portion in such a manner as to be normally inclined in a downward direction due to gravity in relation to said main die portion in cooperation with a stopper means which limits a downward inclination angle of said movable die member relative to said main die portion.